A client of mine has an entire internal Line of Business application built on that mechanic: backend returns javascript to shove HTML somewhere. The trick is th

A client of mine has an entire internal Line of Business application built on that mechanic: backend returns javascript to shove HTML somewhere. The trick is that the js is built automatically based on components. Devs rarely have to touch js. It's lightweight on the frontend and a pleasure to develop for since forms are entirely coded on the backend with components. On rare exceptions more complex pages have some sprinkled lodash.js. They have around 400 CRUD pages with complex business validations. Up to 1.5k concurrent users. At that point MySQL starts to sweat a bit and p95 increases above 200ms. All running on 2 machines: a nginx+phpfpm and a MariaDB. The instant no-compilation feedback loop of edit-save-refresh is orgasmic. That system opened my eyes to a lot of preconceptions and buzzwords I once held sacred.